# Copyright 2022 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================
"""Scope use for separation"""
import abc


class Scoped(abc.ABC):
    """Scoped class."""

    def __init__(self):
        pass

    @abc.abstractmethod
    def new_scope(self):
        pass

    @abc.abstractmethod
    def exit_scope(self):
        pass


class ScopeManager:
    """Manager for scope."""

    def __init__(self, scoped: Scoped):
        self.scoped_ = scoped

    def __enter__(self):
        return self.scoped_.new_scope()

    def __exit__(self, exc_type, exc_value, tb):
        # TODO: Handle exceptions
        self.scoped_.exit_scope()
